draw Poly(gon) Stars is a combo function that draws both polygons and stars because the only difference between them is that the stars SKIP vertices of a polygon with the same number of sides. So skips is the number of vertices to skip. (for example: Sides 5 & skip 0 = a pentagon which becomes a pentagram if you skip 1 or 2 vertices. It draws the pentagon "backwards" if you skip 3. And draws nothing (a dot?) if you skip four.)